Based on the characteristics of the third-grade highway construction in Yanbian undertaken by Baise Highway Administrative Bureau, this paper presents the principles of quality control on construction project With the introduction of the practices in establishing quality guarantee system and strengthening quality control, it analyses the factors affecting the quality of construction and points out that quality control during construction period is crucial for improving the construction quality It also puts forward corresponding solutions in the aspects of establishing quality control network; strengthening quality control on construction project and standardizing quality control regulations